I need a CSS setup for Display post list like, with images

Hi
I need a CSS setup for Display post list like, with images floating left and expert text align up to the images. And this need to be go to a other CSS when it is mobile view.

In the Query settings: http://screencast.com/t/1PHEaaD7z11h it looks like there post list is images floating left, but there is no CSS to make that happen.